I had one that had red loctite on the threads. Only way I could get it off was by sacrificing a wrench I used to bolt in between the accessory bracket and the back of the pulley with a longer nut and bolt. Then I used my big channel locks and man handled the nut until it came loose.
I sheared a couple bolts doing it this way, but eventually broke it loose.
I sheared a couple bolts doing it this way, but eventually broke it loose.
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